EP1693499A2 - Ensemble intérieur oscillant suspendu d'une machine à laver, procédé de commande d'une machine de traitement du linge, ainsi que l'utilisation d'un détecteur électronique comme détecteur d'oscillation de l'ensemble intérieur - Google Patents

Ensemble intérieur oscillant suspendu d'une machine à laver, procédé de commande d'une machine de traitement du linge, ainsi que l'utilisation d'un détecteur électronique comme détecteur d'oscillation de l'ensemble intérieur Download PDF

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Publication number
EP1693499A2
EP1693499A2 EP06002888A EP06002888A EP1693499A2 EP 1693499 A2 EP1693499 A2 EP 1693499A2 EP 06002888 A EP06002888 A EP 06002888A EP 06002888 A EP06002888 A EP 06002888A EP 1693499 A2 EP1693499 A2 EP 1693499A2
Authority
EP
European Patent Office
Prior art keywords
sensor
vibration sensor
unit
laundry drum
electric motor
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP06002888A
Other languages
German (de)
English (en)
Other versions
EP1693499A3 (fr
EP1693499B1 (fr
Inventor
Martin Weinmann
Roman-Hartmut Wauer
Alexander Müller
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Diehl AKO Stiftung and Co KG
Original Assignee
Diehl AKO Stiftung and Co KG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Diehl AKO Stiftung and Co KG filed Critical Diehl AKO Stiftung and Co KG
Priority to PL06002888T priority Critical patent/PL1693499T3/pl
Publication of EP1693499A2 publication Critical patent/EP1693499A2/fr
Publication of EP1693499A3 publication Critical patent/EP1693499A3/fr
Application granted granted Critical
Publication of EP1693499B1 publication Critical patent/EP1693499B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F34/00—Details of control systems for washing machines, washer-dryers or laundry dryers
    • D06F34/14—Arrangements for detecting or measuring specific parameters
    • D06F34/16—Imbalance
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F33/00—Control of operations performed in washing machines or washer-dryers 
    • D06F33/30—Control of washing machines characterised by the purpose or target of the control 
    • D06F33/48—Preventing or reducing imbalance or noise
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F2103/00—Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers
    • D06F2103/24—Spin speed; Drum movements
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F2103/00—Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers
    • D06F2103/26—Imbalance; Noise level
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F2105/00—Systems or parameters controlled or affected by the control systems of washing machines, washer-dryers or laundry dryers
    • D06F2105/46—Drum speed; Actuation of motors, e.g. starting or interrupting

Definitions

  • the invention relates to an oscillating suspended indoor unit of a laundry treatment machine, which comprises a laundry drum and designed as an electric motor drive the laundry drum. Furthermore, the invention relates to a method for controlling a laundry treatment machine, wherein the oscillatory movements of an internal unit of a laundry treating machine are measured and the use of an electronic sensor in the indoor unit.
  • the internal assembly of a washing or spinning machine usually comprises a tub with rotatably mounted laundry drum and a drive unit in the form of an electric motor which drives the laundry drum often via a reduction gear or a transmission.
  • the indoor unit is suspended vibratory in a machine or machine housing and represents a damped oscillatory overall system, which is subject to unbalance dependent resonance phenomena in certain areas of the motor speed reduced speed of the laundry drum. This is due to oscillatory movements due to momentary imbalances in the loading of the laundry drum.
  • Such oscillating movements as a result of imbalances can be counteracted in the program sequence of a washing or spinning machine by means of a targeted laundry dispensing phase.
  • the control program for the drum drive is only then switched to an increased speed for dehumidifying and spin-drying the laundry in the laundry drum, if in the course of such a laundry distribution phase the imbalances have been compensated or at least reduced to a level suitable for the introduction of increased speeds.
  • the invention has for its object to provide a particularly suitable device for detecting a swinging motion of a vibratory suspended indoor unit of a laundry treatment machine with an electric motor driven laundry drum and a corresponding method.
  • an oscillating suspended indoor unit which comprises a laundry drum and designed as an electric motor drive.
  • the indoor unit is preferably used in a washing machine, in a spin dryer, in a tumble dryer or in a laundry cleaning machine.
  • the drive axis of rotation about which the laundry drum rotates during operation, is lying, standing or inclined, in particular at a 45 ° angle to a flat surface, arranged.
  • the power transmission of electric motor to the axis of rotation of the laundry drum is advantageously carried out via a direct drive or an intermediate transmission gear with transmission belt, or the like.
  • at least one vibration sensor is provided, which in its entirety is rigidly or substantially rigidly coupled to the internal unit.
  • the vibration sensor or parts thereof are not carried in the drive rotation of the laundry drum.
  • the inventive construction has the advantage that a mechanically particularly störunan perennialieris for receiving the oscillatory movements is formed.
  • the vibration sensor is designed as an electronic sensor, in particular as an acceleration sensor.
  • the measuring principle of the sensor is based in particular on capacitive, inductive or piezoelectric effects.
  • This design of the vibration sensor means that all mechanical components - if present at all - are insulated within a sensor housing relative to the environment and the vibration sensor is very insensitive to external mechanical and / or chemical influences.
  • Suitable vibration sensors are z. From the company Star Micronics (New Jersey, USA) under the designations ACA302 (3-axis capacitive sensor) or APA 304 (3-axis piezo-ceramic sensor).
  • the internal unit comprises a printed circuit board on which the sensor is arranged as a printed circuit board module.
  • a circuit board is rigidly or substantially rigidly coupled to the vibration system "internal unit".
  • the circuit board is coupled to a washing tub, which is part of the internal assembly, alternatively, the circuit board is fixed, for example, on and / or on the electric motor.
  • the circuit board fulfills a dual function and is at the same time designed as a motor control board, which preferably includes one or more power switches and / or a controller of the engine electronics, preferably designed as a microcontroller or DSP or CPU, for controlling, in particular for speed control of the electric motor.
  • a motor control board which preferably includes one or more power switches and / or a controller of the engine electronics, preferably designed as a microcontroller or DSP or CPU, for controlling, in particular for speed control of the electric motor.
  • This embodiment has the particular advantage that the signal paths between the vibration sensor and the controller are very short and thus immune to interference and, for example, realized as strip conductors.
  • Another advantage is the combination of the Motor control and the vibration sensor on a common circuit board in that the controller in a simple way the measured values of the vibration sensor and at the same feed and measured variables of the electric motor are supplied and in this way the basis for an optimal motion control of the electric motor is created.
  • the vibration sensor is realized and / or arranged such that rotational oscillatory movements of the internal assembly can be detected around a first axis of rotation.
  • the position of the first axis of rotation is arranged obliquely to the drive axis of rotation of the laundry drum, in particular so that there is an angle not equal to 0 ° between the first axis of rotation and the drive axis of rotation.
  • the first axis of rotation and the axis of rotation of the drive can also be arranged skewed relative to one another, i. obliquely to each other, with imaginary extensions of the axes do not intersect.
  • rotational oscillatory movements are detected by the vibration sensor which contain a component which is independent of the rotational oscillatory movement about the drive rotational axis.
  • the first axis of rotation is perpendicular or substantially perpendicular to the drive axis of rotation, so that a component of the rotational oscillatory motion is measured, which is independent of the rotational oscillatory movement about the drive axis of rotation.
  • the most critical to be regarded rotary oscillatory movements about axes perpendicular to the bearing or rotation axis of the drum also referred to as pitching and yawing - - detected and thus recognized.
  • the yaw motions at increased amplitude for striking the tub and thus the internal unit of the washing machine on the side wall, while pitching movements can lead to striking the front of the washing machine.
  • imbalances can be determined comparatively precisely and comparatively precisely controlled in response to the detected unbalance speed changes for a safe and effective operation of the laundry machine.
  • a further vibration sensor in particular a tachogenerator, as is known from the prior art, is additionally provided for measuring the rotary oscillatory movement about the drive axis of rotation of the laundry drum.
  • the invention is based on the consideration that a particularly reliable detection of the oscillatory movement of the internal unit of a laundry treatment machine can be achieved if, in addition to a reflected in the directly detectable speed change oscillatory motion about the axis of rotation and a swinging movement is detected by at least one further axis, which does not coincide with the drive rotation axis defined by the bearing shaft of the engine or the laundry drum.
  • the laundry drum not only turns around this axis of rotation defined by its bearing axis, but also follows, depending on the position and the size of the unbalanced load, oscillatory movements in or about the axes orthogonal to the axis of rotation relative to a Cartesian coordinate system with axis of rotation lying on the x-axis represent the y- and z-axis.
  • the vibration sensor is realized and arranged such that rotational oscillatory movements about a second or a second and a third and a third axis of rotation are detectable.
  • the detection of the rotary rotational movements about two or three axes of rotation is effected by a single vibration sensor component.
  • the vibration sensor is designed to detect linear oscillatory movements in up to three independent spatial directions.
  • the one or more sensors or oscillation sensors are connected to the controller.
  • the internal unit is designed in terms of programming technology and / or circuit technology in such a way that the measured values of the sensors or vibration sensors are taken into account with regard to the control of the electric motor in terms of control technology and / or control engineering.
  • the object underlying the invention is further achieved by a method for controlling a laundry treatment machine according to the features of claim 13.
  • the oscillatory movements of an internal unit of the laundry treatment machine are measured by one or more sensors.
  • the internal unit comprises at least one laundry drum and a drive of the laundry drum designed as an electric motor.
  • At least one of the measuring sensors is designed as an electronic sensor which is rigidly or substantially rigidly coupled in its entirety to the internal unit.
  • the sensor is not carried along with the drive rotation movement of the laundry drum, but only with the vibrations of the internal unit.
  • the measured values of the oscillation movement are transmitted to a controller, which can be used as a microcontroller or the like. is trained.
  • the controller evaluates the measured values of the sensor (s) in real time and - also in real time - controls the electric motor as a function of the evaluated measured values.
  • the rotary oscillatory movement about the drive axis of rotation of the laundry drum is measured from the feed quantities for the motor or the speed fluctuations of the same.
  • FIG. 1 schematically shows a washing machine in an end view against the rear side of a machine housing 1 of the washing machine, wherein the rear side shown faces a loading opening (not shown) of the washing machine.
  • an inner unit 2 is suspended vibratory.
  • the inner unit 2 comprises a lye tub 3, a washing or laundry drum 4, a Trommelriemenrad 5, a transmission belt 6, a Motorriemenrad 7 and an electric motor 8.
  • the inner unit comprises all the components with the rotating washing or laundry drum 4 a form a common vibration system, which is vibration-isolated and / or-damped by a suspension relative to the machine housing 1.
  • the drum-shaped Laugenbottich 3 is aligned in its longitudinal extent parallel to the bottom of the machine housing 1, that is arranged in the machine housing 1 lying.
  • a rectangular coordinate system 4 is drawn with three axes, wherein the axis marked X is aligned parallel to the longitudinal extent of the tub Laugenbottichs 3.
  • the washing or laundry drum 4 is arranged concentrically within the tub Laugenbottichs 3 and is in particular in the rear wall of the Laugenbottichs 3 - ie in the loading opening facing away from the second side wall of the Laugenbottichs 3 - rotatably mounted.
  • the washing or laundry drum 4 is rotatably connected to the Trommelriemenrad 5, which is arranged concentrically to the washing or laundry drum 4, but smaller in diameter than the washing or laundry drum 4 is formed.
  • the Trommelriemenrad 5 is disposed on the side of the second side wall outside of the tub Lye 3.
  • the drum pulley 5 is coupled to a motor pulley 7, which is arranged offset parallel to the drum pulley 5, but offset in the direction of the bottom of the machine housing 1.
  • the motor pulley 7 is rotatably connected to the output shaft of the electric motor 8, so that the motor pulley 7 is driven by the electric motor 8.
  • the washing or laundry drum 4 is rotated within the tub Lye 3 in rotation.
  • the washing or laundry drum 4 is moved by a direct drive, wherein the direct drive is located at the location of the drum belt 5.
  • an engine electronics 10 for example in the form of a planar or 3-D printed circuit board is provided, which is rigidly connected to the electric motor.
  • the engine electronics 10 includes the power output stage for energizing the electric motor 8, a vibration sensor for receiving vibrations of the indoor unit and a controller for detecting the measured values the vibration sensor and for controlling the electric motor.
  • the vibration sensor is designed such that it can measure rotations about the axes of the coordinate system 9 denoted by Y and / or Z and / or the angular accelerations associated with these rotations, ie in particular pitching movements of the internal assembly 2 (about the Y-axis) and / or yawing movements of the internal unit 2 (about the Z-axis).
  • the vibration sensor can be designed such that vibrations are also registered about the X axis.
  • the suspension of the inner unit 2 is realized in the ceiling region of the machine housing 1 by springs 11, which engage in each case with its one end in the ceiling-side corner regions of the machine housing 1 and with its other end to four different positions on the indoor unit 2, here at the top of Laugenbottichs 3, are attached. Further, the inner assembly 2 is supported by four friction damper 12 in the bottom portion of the machine housing 1, wherein the friction damper 12 are each supported with one end in the corner regions of the machine housing 1. The respective other end is attached to the bottom of the machine housing 1 side facing the inner unit 2, here at the bottom of the tub Laugenbottichs 3, at four different positions.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Control Of Washing Machine And Dryer (AREA)
  • Accessory Of Washing/Drying Machine, Commercial Washing/Drying Machine, Other Washing/Drying Machine (AREA)
EP06002888A 2005-02-18 2006-02-14 Ensemble intérieur oscillant suspendu d'une machine à laver, procédé de commande d'une machine de traitement du linge, ainsi que l'utilisation d'un détecteur électronique comme détecteur d'oscillation de l'ensemble intérieur Not-in-force EP1693499B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL06002888T PL1693499T3 (pl) 2005-02-18 2006-02-14 Zawieszony wahliwie agregat wewnętrzny do maszyny pralniczej, sposób sterowania maszyną pralniczą oraz zastosowanie czujnika elektronicznego jako czujnika drgań w agregacie wewnętrznym

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102005007413 2005-02-18
DE102005037144A DE102005037144B4 (de) 2005-02-18 2005-08-06 Schwingfähig aufgehängtes Innenaggregat einer Wäschebehandlungsmaschine mit einem Schwingungssensor

Publications (3)

Publication Number Publication Date
EP1693499A2 true EP1693499A2 (fr) 2006-08-23
EP1693499A3 EP1693499A3 (fr) 2009-02-11
EP1693499B1 EP1693499B1 (fr) 2011-03-30

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Application Number Title Priority Date Filing Date
EP06002888A Not-in-force EP1693499B1 (fr) 2005-02-18 2006-02-14 Ensemble intérieur oscillant suspendu d'une machine à laver, procédé de commande d'une machine de traitement du linge, ainsi que l'utilisation d'un détecteur électronique comme détecteur d'oscillation de l'ensemble intérieur

Country Status (5)

Country Link
US (1) US7921494B2 (fr)
EP (1) EP1693499B1 (fr)
AT (1) ATE503880T1 (fr)
DE (2) DE102005037144B4 (fr)
PL (1) PL1693499T3 (fr)

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ITTO20100957A1 (it) * 2010-12-01 2012-06-02 Elbi Int Spa Macchina lavatrice con rilevazione delle vibrazioni della vasca o camera di lavaggio
EP2620537A1 (fr) * 2012-01-26 2013-07-31 Electrolux Home Products Corporation N.V. Machine à laver le linge

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DE102014001676B4 (de) 2014-02-07 2022-03-03 Diehl Ako Stiftung & Co. Kg Wäschebehandlungsgerät mit Unwuchterfassungseinrichtung und Verfahren zum Erkennen einer Unwucht in einem Wäschebehandlungsgerät
JP2016137091A (ja) * 2015-01-28 2016-08-04 日立アプライアンス株式会社 洗濯機
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ITTO20100957A1 (it) * 2010-12-01 2012-06-02 Elbi Int Spa Macchina lavatrice con rilevazione delle vibrazioni della vasca o camera di lavaggio
WO2012073200A2 (fr) 2010-12-01 2012-06-07 Elbi International S.P.A. Machine à laver dotée d'une détection des vibrations de la cuve ou de la chambre de lavage
WO2012073200A3 (fr) * 2010-12-01 2012-07-26 Elbi International S.P.A. Machine à laver dotée d'une détection des vibrations de la cuve ou de la chambre de lavage
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EP2620537A1 (fr) * 2012-01-26 2013-07-31 Electrolux Home Products Corporation N.V. Machine à laver le linge
WO2013110702A1 (fr) * 2012-01-26 2013-08-01 Electrolux Home Products Corporation N.V. Machine à laver le linge

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DE102005037144A1 (de) 2006-08-24
ATE503880T1 (de) 2011-04-15
US7921494B2 (en) 2011-04-12
DE102005037144B4 (de) 2007-04-19
US20060185097A1 (en) 2006-08-24
DE502006009185D1 (de) 2011-05-12
EP1693499A3 (fr) 2009-02-11
PL1693499T3 (pl) 2011-10-31
EP1693499B1 (fr) 2011-03-30

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